Journal ArticleDOI
pH-Dependent Surface-Enhanced Raman Scattering of 8-Hydroxy Quinoline Adsorbed on Silver Hydrosol
Joydeep Chowdhury,Manash Ghosh,T. N. Misra +2 more
- Vol. 228, Iss: 2, pp 372-378
TLDR
The apparent enhancement factor calculations of the principal Raman bands indicate that in the surface-adsorbed state, an HQ molecule is oriented neither flat nor vertical to the silver surface but is tilted, which supports the evidence of a charge transfer interaction.Abstract:
Surface-enhanced Raman scattering (SERS) of 8-hydroxy quinoline (HQ) adsorbed on silver hydrosols are compared with the FTIR and normal Raman spectrum in the bulk and in solution. Definite evidence of the charge transfer interaction to the overall contribution in the SER enhancement has been reported. The excitation profile study also supports the evidence of a charge transfer interaction. The effect of pH variation on the SER band intensity is explained in terms of chemisorption of the molecule on bare and chlorinated silver surfaces. The apparent enhancement factor calculations of the principal Raman bands indicate that in the surface-adsorbed state, an HQ molecule is oriented neither flat nor vertical to the silver surface but is tilted.read more
Citations
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Journal ArticleDOI
An in situ attenuated total reflection infrared study of a chiral catalytic solid-liquid interface: cinchonidine adsorption on pt.
Davide Ferri,Thomas Bürgi +1 more
TL;DR: Cinchonidine competes with solvent decomposition products for adsorption sites on the Pt, which may contribute to the observed solvent dependence of the heterogeneous enantioselective hydrogenation of ketones by cinch onidine-modified Pt.
Journal ArticleDOI
Identification and characterization of pharmaceuticals using Raman and surface‐enhanced Raman scattering
TL;DR: In this paper, a short review highlights different Raman techniques (dispersive, Fourier transform, resonance Raman, SERS, SERRS, FT-SERS) employed in pharmaceutical investigations.
Journal ArticleDOI
A Raman spectroscopic study of the diclofenac sodium–β-cyclodextrin interaction
TL;DR: In this article, the inclusion complex of diclofenac sodium (DCFNa) and beta-cyclodextrin (betaCD) was prepared and analyzed by using Raman and SERS spectroscopy.
Journal ArticleDOI
Surface-Enhanced Raman Scattering Spectroscopy as a Sensitive and Selective Technique for the Detection of Folic Acid in Water and Human Serum:
TL;DR: The potential to transfer this technique to real biological samples by the detection of folic acid in human serum samples by SERS is demonstrated and the potential applications of this technique in a biological environment are highlighted.
Journal ArticleDOI
Surface-Enhanced Raman Spectroscopy (SERS) Cellular Imaging of Intracellulary Biosynthesized Gold Nanoparticles
TL;DR: SERS imaging was used to detect intracellular and extracellular gold nanoparticles biosynthesized by the green algae Pseudokirchneriella subcapitata to identify surface-associated biomolecules and to evaluate the nanoparticle biosynthesis mechanism.
References
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Journal ArticleDOI
Raman spectra of pyridine adsorbed at a silver electrode
TL;DR: In this article, Ramaman spectroscopy has been employed for the first time to study the role of adsorption at electrodes, and it has been possible to distinguish two types of pyridine adaption at a silver electrode.
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Surface raman spectroelectrochemistry: Part I. Heterocyclic, aromatic, and aliphatic amines adsorbed on the anodized silver electrode
TL;DR: In this article, the authors verified the remarkable sensitivity of Raman spectroscopy for the study of adsorbed pyridine on a silver surface, and extended its applicability to other nitrogen heterocycles and amines.
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Anomalously intense Raman spectra of pyridine at a silver electrode
TL;DR: Anomalously intense Raman spectra of pyridine at a silver electrode was reported in this article, where the Raman spectrum was shown to have a high Raman intensity.
Journal ArticleDOI
Plasma resonance enhancement of Raman scattering by pyridine adsorbed on silver or gold sol particles of size comparable to the excitation wavelength
TL;DR: In this paper, a new resonance Raman phenomenon is proposed which is the Raman component of resonant Mie scattering, and in which the polarizability of the metal particles is modulated by the vibrations of the adsorbed molecules.